Mold-form for concrete wall construction.



A. P. ORARY. MOLD FORM FOR CONCRETE WALL CONSTRUCTION.

APPLIOATION FILED 0073.9, 1909.

Patented Nov. 19, 1912.

2 SHEETS-SHEET 1.

Wiiness's:

A. P. GRARY. MOLD FORM FOR CONCRETE WALL CONSTRUCTION.

APPLICATION FILED 0cm. 1909. 1,044,862, Patented Nov. 19,1912

2 SHEETS-SHEET 2.

4* i 2 Invenior:

Jitorzeey.

Witne rsea':

ALEXANDER r. canny, or mew YORK, N. Y.

MOLD-FORM FOR GONGRETE WALL CONSTRUCTION.

Specification of Letters Patent.

Application filed October 9, 1909. Serial No. 521,921.

Patented Nov. 19, 1912.

To all whom it may concern:

Be it known that I, ALEXANDER P. CRARY, a citizen of the United States, residing 'at the borough of Manhattan, city of New: York, in the county of New York and State of New York, have invented-a certain new and useful Improvement in Mold-Forms for Concrete WVall Construction, of which the following is aspecification, reference being. had therein to the accompanying drawings, I forming part thereof.

My mvention relates to mold forms for concrete wall construction particularly in; high, massive concrete'work where the wall is thick or where only one face thereof is exposed, as in dams, canals, locks, piers, bulkheads, retaining walls, and the like.

The eneral objects of the invention are ease anc l rapidity of construction, simplicity and economy in wall construction.

More particular objects are to dispense entirely with outside bracing, with 'ties through. the wall, and with ties above the;

' enlarged side view of one of the mold-bolts,

wall.

Further objects are to obtain quick andv accurate setting of the forms and to obviate 1 the formation of'lips or other unevennesses on the wall.

Other objects and advantages of my invention will appear from the following description.

In carrying out m invention I provide a. form having a mol -faoe.extendingabove the finished part of the Wall and having a supporting portiondetach'ably secured to such finished part of the wall, the form being adapted to be raised by successive steps as the building of the wall progresses.

My invention includes a guide forming a foundation to facilitate the setting of the form and having a mold-face forming a. continuation of the mold-face of the form and thereby preventing the formation of a lip or offset on the face of the wall.

My invention also includes a mold-bolt adapted tosupport an anchor which is to be permanently embedded in the wall, the mold-bolt, before the concrete sets hard- 1 around it, being replaced by an anchor-bolt of smaller diameter.

I shall nowdescribe my invention with reference to the accompanying drawings and shall thereafter point out my invention inclaims.

s F igure 1 is an elevation of a portion of the complete mold in place on a wall in course of construction,. shown as partly broken away". Fig. 2 is an end elevation of what is shown in Fig. 1 as viewed from the left, the wall being 111 section. Fig. 3 is a detail horizontal section on a plane indicated by ghe line 33 of Fig. 1, looking downward. ig. 4 is a similar view on a plane indicated by the line 4-4 of Fig. 1. Fig. 5 is a view similar to Fig. 2, but with one more layer added to the wall and'showing the form 1n course of removal. Fig. 6 is an with a portion broken out. Fig. 7 is a similar view of one of the anchor-bolts. Fig. 8 is a similar View of one of the extension bolts. Fig. 9 is an enlarged central longitudinal section of a sleeve-nut for connecting the extension-bolt to the anchor-bolt. Fig. 10 is an enlarged end view of an anchor-nut. Fig. 11 is an axial section 01? the anchonnut shown in Fig. 10, viewed from the right.

In the embodiment of my invention illustrated in the drawings a form is shown as comprising lagging 12, forming a mold face, uprights 1 3 and waling 14, all secured firmly together, for example by nailing and by lag screws 15. The form described is shown as supported by a finished portion 16 of the wall in course of construction. The uprights 13, as shown in Figs. 1 and 2, extend some distance both above and below the upper edge of the finished portion 16 of the wall the lower portion'of the form supporting the upper portion, which carries the lagging 12.

An upper guide 17, shown as composed of-two boards and short vertical cleats, is

supported at the top of the form by the lagging 12 and uprights 13 and has a mold-face continuous with the mold-face of the form, so that the guide 17 when in place, as shown in Figs. 1 and 2, forms part of 'the mold. The upper guide 17 carries mold-bolts 18 having reduced screw threaded end portions, as most clearly seen in Fig. 6. These mold-bolts 18 support on their screw-threaded ends anchor-nuts 19 which are ada ted, together with the projecting portions 0 the mold-bolts, to be embedded in the fresh concrete forming the next upper layer 20 of the wall, as shown in Fig. 5. The moldbolts 18 are removed before the concrete has finally set, leaving the-anchor-nuts 19 permanently embedded in the wall and leaving holes leading to the anchor-nuts which, when the concrete has finally set, will be very slightly smaller than the larger unthreaded portions of the mold-bolts, but of larger diameter than the threaded bolt deceiving holes in the anchor -nuts 19. Into these holes in the concrete are inserted anchorbolts 21 of smaller diameter than the moldbolts 18 and provided with screw-threaded ends corresponding to the screwthreaded anchor-nuts 19 into which they are screwed, as shown in Figs. 2 and 5.

The anchor-bolts 21 are shown as supporting a lower guide 22 in all respects similar to the upper guide 17. In 'fact the lower guide 22 was formerly an upper guide and carried anchor-supporting mold-bolts which have now been removed and replaced by the anchor-bolts 21. The lower guide 22 constitutes both a foundation rest and a guide for the form comprising the lagging 12, up-

rights 13 and waling 14. By reason of the fact that the lower guide 22 has not been removed since it was anupper guide, it maintains a close contact relation to the wall and its top edge projects slightly above the finished portion of the wall, so that when the form is placed in position thereon, as shown in Figs. 1 and 2, the mold-faces of theform and of the lower guide 22 register and form a continuous moldface, thereby obviating any possibility of uneven joining of adjacent upper and lower layers of the wall, whereas heretofore commonly a slight overhang or lip was formed at the junction of the two layers, due to the fact that it is impossible for a newly placed mold face to fit as closely and perfectly to the finished portion of the wall as did the mold-face against which it was poured. The guides of the' present invention entirely overcome this difficulty and also greatly facilitate the setting of the form.

The anchor-bolts 21 are threaded at both ends and are provided at their outer ends with reduced smooth portions, as appears in Fig. 7, in order that they may be passed through the lower guide 22 and screwed into the anchor-nuts 19 without danger of spoiling the outer threads. Screwed on the outer endsof the anchor-bolts 21 are sleeve nuts 23 which serve the double function of retaining the lower guide 22 in place on the anchor-bolts 21 and of receiving the inner screw-threaded ends of mold-supporting or extension bolts 24. These extension-bolts 24 are screw-threaded at both ends, as most clearly shown in Fig. 8, and pass through the upper waling piece 14 and receit'e at their outer ends large washers 25 and ordinary nuts 26. The form is thus supported on the lower guide 22 and is secured to the finished portion 16 of the wall near its top by the anchor-nuts 19, anchor bolts 21,

sleeve-nuts 23, extension-bolts 24, and outer nuts 26 (Figs. 2 and 4).

It is to be noted that not only do the uprights 13 extend upward from the upper waling piece 14 above the top of the finished portion of the wall and support the lagging 12 and upper guide 17, but they extend substantially an equal distance downward from the upper waling. piece below the top of the wall and act as cantalivers to hold theform in upright position. The lower edge of the mold-face formed by the lagging 12 is guided by the lower uide 22, as above exlained, and the mol -face, formed by the agging 12 and the upper guide 17, may be angularly adjusted to bring it into alinement with or in other desired relation to the face of the finished portion 16 of the wall, by adjustment of the lower ends of the cantaliver uprights 13 to and from the wall.

The means shown for effecting this adjustment comprise combined adjusting and steadying bolts 27 and wedges 28.

The adjusting bolts 27 are in all respects similar to the mold supporting extension bolts 24 except that they are longer. The adjusting bolts 27 pass through the waling piece 14 and enter the holesin the concrete which were last occupied by the anchorbolts 21, and are screwed into the embedded anchor-nuts 19. The outer ends of the ad justing bolts 27 are provided with washers and ordinary nuts 29. The wedges 28 are driven between the lower portions of the cantaliver uprights 13 and the wall 16. By loosening the wedges 28 and tightening the nuts 29 the upper portions of the moldform will be thrust outward, while by a reverse operation such upper portions will.

adjusting bolts 27 are inserted into the holes in the wall just vacated by the anchor-bolts 21, and the form is adjusted and fully secured in place on the upper wall section or layer 20 in the same manner that it was previously secured on the lower portion 16 of the wall. It is to be noted that the guides 17 and 22 are alternately supported by the form and act as guiding foundation supports therefor, and that the anchor-bolts 21 successively replace the mold-bolts 18, and the adjusting bolts 27 inlike manner replace the anchor-bolts 21. If desirable, the holes left in the wall after the removal of the adjusting bolts 2? may be readily filled with a concrete.

It is obvious that various modifications may be made of the construction shown and above particularly described within the principle and scope of my invention.

I claim:

. 1. In combination with a mold for concrete walls including a mold-face and a waling spaced from the mold-face, an anchor adapted to be embedded in the fresh concrete, a mold-bolt extending from the'mold andsupporting the anchor and adapted to be disengaged from the anchor and removed before the concrete has completely hardened, an anchor-bolt adapted to replace the moldbolt and engage the anchor, the anchor-bolt when in engagement with the anchor extending with its outer end between the moldface and the waling, a mold-supporting bolt extending through the waling, and a sleeve nut disposed between the mold-face and the waling and connecting the anchor bolt and ,the mold-supporting bolt.

2. In combination with a .mold for concrete walls including a mold-face and a waling spaced from the mold-face, an anchor adapted to be embedded in the fresh concrete, a mold-bolt having an end of reduced diameter, which mold-bolt extends from the mold and supports the anchor on its reduced end and is adapted to be disengaged from the anchor and removed before the concrete has completely hardened, an anchor-bolt of the diameter of the reduced end of the moldbolt and adapted to replace the same and engage the anchor, the anchor-bolt when in engagement with the anchor extending with its outer end between the mold-face and the waling, a mold-supporting bolt extending through the waling, and a sleeve nut disposed between'the mold-face and the waling and connecting the anchor-bolt and the mold-supporting bolt.

3. A three-part mold for concrete wall construction comprising a form having an upright, a mold-face carried thereby, and two similar guides adapted to serve alternately as lower and upper guides as the form is raised by successlve steps; each guide being adapted when serving as an upper guide to be supported on the mold face and to form a continuation thereof, and when serving as a lower guide to be supported by the wall and to support the rest of the form, the mold-face being free from direct connection with the wall.

4. A three-part mold for concrete wall construction comprising a form having a plurality of uprights, a mold-face. carried thereby, and two similar guides adapted to serve. alternately as lower and upper guides as the form is raised by successive steps, and to form continuations of the mold-face; and

permanent anchors detachably .carried by the upper guide and arranged to be embedded in the wall, the lower guide being adapted to be supported by the permanent anchors and to support the rest of the mold, the mold-face being free from direct connection with the wall.

5. A mold for concrete wall construction comprising a form provided with a moldface and having cantaliver uprights supporting the mold-face and extendm below the mold-face for a distance exceeding the width of the mold-face, walings secured to the uprights, an upper and a lower guide, anchors detachably carried by the upper guide and adapted to be permanently embedded in the wall, moldbolts for connecting the anchors to the top guide, anchorbolts of smaller diameter than the moldbolts at the median portions of the cantaliver uprights and passing through a waling and the lower guide, and adapted to engage the anchors last embedded in'the wall, and adjusting-bolts at the lower ends of the uprights adapted to engage the anchors in a series below those engaged by the anchor bolts.

6. A three-part mold for concrete wall construction comprising a form having a plurality of uprights, a mold-face carried thereby, and two similar guides adapted to serve alternately as lower and upper guides as the form is raised by. successive steps, and to form continuations of the mold-face; anchors carried by the upper guide and adapted to be permanently embedded in the fresh concrete, removable mold-bolts detachably connecting the anchors to the upper guides,

and anchor-bolts'of smaller diameter than low the lower guide and adapted to serve as the mold-bolts arranged to detachably engage the anchors embedded in the wall and support the lower guide; the lower guide being engaged to support the rest of the mold and the mold-face being free from direct connection with the wall, and the uprights extending a substantial distance becantalivers. 1 0

In testimony whereof I have aflixed my signature in presence of two witnesses.

ALEXANDER P. CRARY Witnesses:

H. C. HANSON, H. V. Du'mow. 

